Its a station for charging my electric car. The data are requests from the main PCB to the plug PCB and another PCB that I cant figure out the purpose yet. I would like to connect it to my home monitoring system but the station doesn't have any outputs. The data are, from what I've gathered, to check if the plug is connected because the cable to the plug PCB is disconnected and station says its out of order. The plug PCB is in slave mode and doesn't transmit any data.

From my looks of it I think that the messages are encoded in some way because every messages is different. The properties of an RS485 signal (baud rate, data bits etc) I'm guessing are 115200 8n1 because with other permutations there are no patterns in the revived data.

If the messages are encoded would it be possible to decode it without knowing the contents of the message?